Triethylamine → Methanesulfonic acid 1-(3-benzyloxy-1-methyl-4-oxo-1,4-dihydro-pyridin-2-yl)-2,2,2-trifluoro-ethyl ester

HRID 1187479노트

반응식

HRID 1187479 반응식
[CH2:1]([O:8][C:9]1[C:14](=[O:15])[CH:13]=[CH:12][N:11]([CH3:16])[C:10]=1[CH:17]([OH:22])[C:18]([F:21])([F:20])[F:19])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.CCN(CC)CC.[CH3:30][S:31](Cl)(=[O:33])=[O:32]>C(Cl)Cl>[CH2:1]([O:8][C:9]1[C:14](=[O:15])[CH:13]=[CH:12][N:11]([CH3:16])[C:10]=1[CH:17]([O:22][S:31]([CH3:30])(=[O:33])=[O:32])[C:18]([F:20])([F:21])[F:19])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

참가 물질

5

반응물 3

HCID 8471TriethylamineHCID 31297Methanesulfonyl chlorideHCID 67282870HCID 67282870, 화합물

생성물 1

HCID 86623501Methanesulfonic acid 1-(3-benzyloxy-1-methyl-4-oxo-1,4-dihydro-pyridin-2-yl)-2,2,2-trifluoro-ethyl ester수율 19.4%

시약·촉매·용매 1

HCID 6344Dichloromethane용매

실험 절차

To a suspension of 3-benzyloxy-1-methyl-2-(2,2,2-trifluoro-1-hydroxy-ethyl)-1H-pyridin-4-one (4 g) in CH2Cl2 (80 mL) was added Et3N (2.40 mL, 17.5 mmol), followed by methanesulfonyl chloride (1.25 mL, 16.2 mmol) at ice-water bath temperature. The resulting mixture was then stirred for 3 h. The reaction mixture was quenched with water and extracted twice with CH2Cl2 (2×50 mL). The combined organic fractions were washed with brine and dried over anhydrous sodium sulfate, filtered and concentrated to dryness. The residue was purified by flash column chromatography on silica gel using a mixture of CH2Cl2 and MeOH (95/5, v/v) as eluant, thereby affording the product, methanesulfonic acid 1-(3-benzyloxy-1-methyl-4-oxo-1,4-dihydro-pyridin-2-yl)-2,2,2-trifluoro-ethyl ester (0.97 g, 19.4% yield). MS-ESI (m/z): 391.9 [M+1]+, 206, 91.

후처리

  1. customThe reaction mixture was quenched with water
  2. extractionextracted twice with CH2Cl2 (2×50 mL)
  3. washThe combined organic fractions were washed with brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated to dryness
  7. customThe residue was purified by flash column chromatography on silica gel using
  8. additiona mixture of CH2Cl2 and MeOH (95/5

출처 및 근거

ORD 기록
ord-da7b602940d549cbb9b432bf8020b30e
출처 데이터셋
uspto-grants-2014_03
특허 번호
US08673943B2

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